Panacur C (fenbendazole) Canine Dewormer is for the treatment and control of Roundworms, Hookworms, Whipworms and Taenia Tapeworms in Dogs. Panacur C treats all 4 major intestinal parasites in dogs. The daily dose for Panacur C is 50 mg/kg (22.7 mg/lb) of body weight. Consult your veterinarian for assistance in the diagnosis, treatment and control of parasitism. Approximately 1% of dogs had vomiting associated with the use of this product. Panacur C Canine Dewormer has no known interactions.